Grate.



J. REAGAN.

GRATB.

APPLICATION FILED JULY 16,1913. 1, 1 1 2,383.

Patented Sept. 29, 1914.

3 SH-EBTSSHBET 2.

*"mu'llllll nmhhnl 1 1 J. REAGAN.

GRATE.

APPLICATION FILED JULY 16, 1913.

1,1 12,383. atented Sept. 29, 1914.

3 SHEETS-SHEET 3.

UNITED s'rATEs PATENT OFFICE.

JAMES REAGAN, OF PHILADELPHIA, PENNSYLVANIA.

Genre.

Application filed July 16, 1913. Serial No. 779,365.

To all whom it may concern 2 Be it known that 1, Jules REAGAN, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Grates; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 1

The invention relates to grates in general, but more particularly to furnace grates of the type commonly known as rockablebar grates; and it consists in the peculiar construction and arrangement of the several parts and their combination, as will be hereinafter fully described in this specification and briefly stated in the claims.

One of the chief objects of theinvention is to provide a chopper which can be readily detached from the rocking-bar and replaced without taking the grate apart or removing the rocking-bar.

Another and important feature of the invention is to provide ample space between the rocking bar and choppers for the passage of air through the grate and thence to the fire-chamber.

' Still another object of the invention is to provide a simple and effective device for mechanically stoking the fire.

Heretofore it has been found necessary, in order to reline the furnace walls or make other repairs thereto to removeentirely the inner parts of the grate, leaving only. the frame, so that the workmen may have free access to the parts to be relined or repaired.

The present invention is designed to overcome this d1fficulty, as an entlre row of choppers may be readily removed so as to provide ample space for the workmen engagcd in making the repairs, without removing the rocking-bar or' other parts of the parent upon a complete disclosure thereof.

In the drawings-Figure 1 is a perspective view of a grate showing my unprovement applied thereto; Fig. 2, a central longitudinal section thereof; Fig. 3 a rear end Specification of Letters Patent.

Patented Sept. 29, 1914.

elevation; Fig. 4 aside elevation of one of the grate-bars removed, showing a rowof choppers mounted thereon; Fig. 15 a perspective view of one of the choppers; Fig. 6, a modified form of chopper; Fig. 7 a peri spective view of the grate showing the stoking :device in action; Fig. 8, a perspective view of one of the stoker-castings; Fig. 9, a side view of one of the bridge-bars, and Fig. 10 a plan and a perspective View, re-

spectively of one of the sections of the front head-block.

Referring to the several views, the numeral 1 indicates the frame of the grate; 2, 2 the front head and rear head-blocks, respectively, 3, 3, the bridge-bars. The headblocks are made in. detachable sections as shown in Fig. 1, each section comprising a fiangedplate having an inwardly-extending. lug, the plate and lug being provided with alined apertures, as shown in Fig. 10, to receive a securing-pin, not shown; and the bridge-bars are provided with air-passages 3 as shown in Fig. 9, and both the headblocks and the bridge-bars are provided with clin'kercutting edges.

Detachably mounted upon the square bars l, between the head-block and the adjacent bridge-bar are two rows of choppers 5, each chopper being provided with clearance openings 6, clinker-crushing teeth 7 and an end cutting ed e 8 which is adapted to coact with one ofthe cutting edges ofeither the head ortail-blocks andthebridge-bars. The lower portion of each chopper is bifurcated to provide attaching legs 9 for straddling the rocking-bar 4, and be detachably secured thereonby a key or wedge 10 fitting in recess 11 ma-dein opposite faces of the legs, said key being prevented from longitudinal-movement by lugs 12, 12, which set against one side of the attaching-legs and by acotter or linch-pin 13. In fitting the grate with the choppers it is customary with an attaching-leg 9 and with abifurcated leg 14 to insure additional stability for "such chopper, as shown in Fig. 5, or I may employ twosu'chzbifurcated arms 14, one eachlside of the attaching-legs 9. The

legs 14 besides insuring greater stability lever 18 by links or rods 19, and spanners for the chopper also serve to take part of the strain oil of the legs 9.

The numerals l5 and 16 indicate long and short spanners respectively, each being provided with a square hole to adapt it to he slid on the rocking-bar to the proper or de sired position before the choppers are placed thereon, as shown in Fig. 4, the spanners 15 being connected with shaking- 16, connected with spanners 15 by tiebars 20;

It will be noted that the spanners, both long and short, may \be placed on the rock ing-bars either between the choppers, or between the attaching-legs and bifurcated legs as may be found convenient to bring them in direct line with the shaking-devices. require to beremoved in making repairs Or changing choppers, a great advantage over the sp'anners which require removal to permit changes and repairs to be made is ob tain-ed,'as they are always more in proper position to be operated by the mechanism which operates the choppers, besides there is more or'lessdanger in replacing choppers which require removal in wrong position by inexperienced workmen after changes in burned parts have been made.

The rocking-bars are provided at each end :with acylindrical journal block 21, so as to adapt them to be journaled in bearings 22 made in the respective sides of the frame.

The numeral 23 indicates a small drop grate extending downwardly from the deadone and one-half inches square, and mount,

ing thereon mypec-uliarly constructed choppers an air-space is provided between each row of choppers and their bar, which preserves the rocking-bars from warping and burning out, and deliversthe air equally to the grate.

The stoking-device is composed of a numberof Stoker-castings 25 arranged between thechoppers, as shown in. Figs. 1, 2 and 7 Each Stoker-casting is'provided at one end with a hole 26 in which is fitted a spool 26 to serve as a journal-bearing mounted on one of-the. square rockable bars t, so that By providing spanners which do not the stoker-castings may be rocked independently of the choppers. The opposite end of each stoker-cast-ing is provided with a curved slot 27, open at its lower end, in which the adjacent rockable-bar L is re ceived, so as to permit the lifting-action of the Stoker-casting. Each stokencasting is also provided with a depending arm 28 to which operating rods or links 29 are attached, each longitudinal row of stokercastings being connected together, one row being shown in Fig. 7.

'When the stoker-device is in action, as shown in Fig. 7, the fire is thrown back and Li-en it is not in action it is a part of the g1 ate, supporting the fire while being cleaned by the choppers, and is provided with air-cooling spaces or openings.

By making the front head-block in detachable sections, any section may be easily and readily removed when burnt out, and replaced by a new one. In fact any piece or part of the grate surface may be removed, and replaced by a new one without disturbing the frame, or the pulling-power or connections that tie the grate together, which is an important advantage over the graves now in use.

Having thus fully described my invention, what I claim is l. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachably-holding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in a vertical direction without a lateral displacement.

2. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachably-holding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in a vertical direction without a vertical displacement, spanners arranged on the rocking-bar, between the pairs of legs, and means for rocking the spanners and thereby the choppers.

3. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachably-holding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in a vertical direction without a lateral displacement, bridge-bars having horizontal air-spaces therethrough, and independent means for rocking the choppers.

4:. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachably-holding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in a vertical direction without lateral displacement, independent means for rocking the choppers, stoker-castings journaled on the bar, between the choppers, and means for elevating the stoker-castings so as to raise and hold the fire-bed in suspension while the choppers are being rocked.

5. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachably-holding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in a vertical direction without a lateral displacement, independent means for rocking the choppers, head and tailblocks comprising a number of sections, each adapted to be attached to the respective head and tail-bars of the grate frame by securing pins, and bridge-bars provided with oppositely-disposed cutting edges and with air spaces therethrough. 1

6. A furnace grate, having in combination a square rocking-bar, a plurality of choppers, each having a plurality of pairs of legs adapted to straddle the rocking-bar and provide air-spaces between the choppers and said bar, one pair of said legs coacting with keying means for detachablyholding the choppers on the bar against vertical and lateral play, but allowing said choppers to be removed in avertical direction without a lateral displacement, spanners arranged on the rocking-bar, between the pairs of legs, means for rocking the spanners and'thereby the choppers, Stoker-castings journaled on said bar, between the choppers, and means for elevating the Stoker-castings.

In testimony whereof I afiix my signature, in the presence of two witnesses.

, 1 JAMES REAGAN. Witnesses:

GEO. S. HENDERSON, J. W. CAssmY.

Copies 01' this patent may be obtained for five cents each, by addressing the v Commissioner of Iatents,

i Washington, I). 0." 

